call-back

1 a return call

2 the recall of an employee after a layoffcallback n : a request by the manufacturer of a defective product to return the product (as for replacement or repair) [syn: recall]

English

Noun

1. The return of a situation to a previous position or state.
2. A return telephone or radio call; especially one made automatically to authenticate a logon to a computer network
3. A product recall because of a defect or safety concern.

Callback can mean:

• Callback (computer science), executable code that is passed as a parameter to other code
• Callback (telecommunications), the telecommunications event that occurs when the originator of a call is immediately called back in a second call as a response
• Callback verification, a method for e-mail address verification used in SMTP
• Callback (comedy), a joke which refers to one previously told in a set of jokes including both
• Web callback, a technology that provides telephone callback for websites
• In theater, film, or other performing arts, a follow-up after an audition, in which directors can further audition candidates for a position or part